156 lines
3.1 KiB
C
Executable File
156 lines
3.1 KiB
C
Executable File
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ident "@(#)tipout.c 1.13 93/12/13 SMI" /* from UCB 5.1 4/30/85 */
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#include "tip.h"
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/*
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* tip
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*
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* lower fork of tip -- handles passive side
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* reading from the remote host
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*/
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static jmp_buf sigbuf;
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/*
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* TIPOUT wait state routine --
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* sent by TIPIN when it wants to posses the remote host
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*/
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void
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intIOT()
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{
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write(repdes[1], &ccc, 1);
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read(fildes[0], &ccc, 1);
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siglongjmp(sigbuf, 1);
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}
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/*
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* Scripting command interpreter --
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* accepts script file name over the pipe and acts accordingly
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*/
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void
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intEMT()
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{
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char c, line[256];
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register char *pline = line;
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char reply;
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read(fildes[0], &c, 1);
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while (c != '\n') {
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*pline++ = c;
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read(fildes[0], &c, 1);
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}
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*pline = '\0';
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if (boolean(value(SCRIPT)) && fscript != NULL)
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fclose(fscript);
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if (pline == line) {
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boolean(value(SCRIPT)) = FALSE;
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reply = 'y';
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} else {
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if ((fscript = fopen(line, "a")) == NULL)
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reply = 'n';
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else {
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reply = 'y';
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boolean(value(SCRIPT)) = TRUE;
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}
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}
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write(repdes[1], &reply, 1);
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siglongjmp(sigbuf, 1);
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}
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void
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intTERM()
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{
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if (boolean(value(SCRIPT)) && fscript != NULL)
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fclose(fscript);
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exit(0);
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}
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void
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intSYS()
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{
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boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
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siglongjmp(sigbuf, 1);
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}
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/*
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* ****TIPOUT TIPOUT****
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*/
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tipout()
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{
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char buf[BUFSIZ];
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register char *cp;
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register int cnt;
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extern int errno;
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sigset_t omask, bmask, tmask;
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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signal(SIGEMT, (sig_handler_t)intEMT); /* attention from TIPIN */
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signal(SIGTERM, (sig_handler_t)intTERM); /* time to go signal */
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signal(SIGIOT, (sig_handler_t)intIOT); /* scripting going on signal */
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signal(SIGHUP, (sig_handler_t)intTERM); /* for dial-ups */
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signal(SIGSYS, (sig_handler_t)intSYS); /* beautify toggle */
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(void) sigsetjmp(sigbuf, 1);
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sigemptyset(&omask);
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sigemptyset(&bmask);
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sigaddset(&bmask, SIGEMT);
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sigaddset(&bmask, SIGTERM);
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sigaddset(&bmask, SIGIOT);
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sigaddset(&bmask, SIGSYS);
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sigemptyset(&tmask);
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sigaddset(&tmask, SIGTERM);
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for (;;) {
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cnt = read(FD, buf, BUFSIZ);
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if (cnt <= 0) {
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/*
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* If dialback is specified, ignore the hangup
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* and clear the hangup condition on the device.
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*/
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if (cnt == 0 && DB) {
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int fd;
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DB = 0;
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if ((fd = open(DV, O_RDWR)) >= 0) {
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if (fd != FD)
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close(fd);
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}
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continue;
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}
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/* lost carrier */
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if ((cnt < 0 && errno == EIO) ||
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(cnt == 0)) {
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(void) sigprocmask(SIG_BLOCK, &tmask, NULL);
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intTERM();
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/*NOTREACHED*/
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}
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} else {
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(void) sigprocmask(SIG_BLOCK, &bmask, &omask);
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if (!noparity)
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for (cp = buf; cp < buf + cnt; cp++)
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*cp &= 0177;
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write(1, buf, cnt);
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if (boolean(value(SCRIPT)) && fscript != NULL) {
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if (!boolean(value(BEAUTIFY))) {
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fwrite(buf, 1, cnt, fscript);
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} else {
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for (cp = buf; cp < buf + cnt; cp++)
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if ((*cp >= ' ' && *cp <= '~')||
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any(*cp, value(EXCEPTIONS)))
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putc(*cp, fscript);
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}
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}
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}
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(void) sigprocmask(SIG_SETMASK, &omask, NULL);
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}
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}
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